Machine for straightening and polishing metal round section bars or tubes



Sept 1, 1953 R HAMPTO MACHINE FOR STRAIGHTENING AND POLISHING ,6 ,6

METAL RO D SECTION BARS OR TUBES F d Nov. 50, 1951 FIG. I.

FIG. 2.

Iatented Sept. 1, 1953 MACHINE FOR; STRAIGHTENING AND POL- ISHING METAL ROUND SECTION BARS OR TUBES Ronald Hampton, Wightwick, near Wolverhampton, England, assignor to The Union Steel & Manufacturing .Company Limited, Wolverhampton, Staffordshire, England Application November 30, 1951, Serial No. 259,025 In Great Britain December 7, 1950 4 Claims.

The invention relates to machines for straight ening and polishing round metal bars or tubes usually of ferrous metal by a process known as reeling. In a reeling machine of known type for carrying out this process two chilled cast iron rolls one of which is of concave form and the other of convex form are mounted longitudinally side-by-side but without touching They are so mounted in bearings of the machine that their axes are inclined to a common plane, the inclination of the'one being the opposite way to that of the other. The rolls are rotated in the same direction and the work is presented to the rolls longitudinally and is held up to the rolls by a longitudinal straight bearer, the distance apart of the rolls being such that the work always remains below the said common plane. Means are provided for adjusting the bearer towards and from the rolls and the distance apart of the rolls is adjusted, in either case, to suit the diameter of the work. The bearer is usually of metal or hard wood. The work is so held by the bearer that it bears against the middle part of the convex roll and against the two ends of the concave roll.

The effect of the reeling process is that the work is continuously rotated by the rolls and bent and rubbed by them and also rubbed by the bearer. The combined efiect is to cause the work to be fed along the bearer and to suffer a continuous bending strain. As a result the work leaves the rolls straight and polished.

A disadvantage of the process is that it is relatively slow and the object of this invention is to increase the amount of work which can be processed per minute.

According to this invention a second longitudinal bearer is provided and is located opposite the existing bearer, that is to say on the other side of the said common plane, so that two bars or tubes can be processed at the same time.

The rolls may be disposed side-by-side in plan view of the machine with the bearers located one below the rolls and the other above them, or the rolls may be disposed one above the other in the machine, with the two bearers located one at each side.

An embodiment of the invention will now be described with reference to the accompanying drawings, in which:

Fig. 1 is a fragmentary side elevation of a reeling machine.

Fig. 2 is a sectional view on the line 2, 2, of Fig. 1.

Referring to the drawings, the reeling machine comprises end frames In in which are journalled two chilled cast iron rolls II and I2 respectively, the roll II being of convex form and mounted in bearings I3 in said end frames, whilst the roll 12 is of concave form and is similarly mounted. Both rolls are driven-in rotation in the same direction, as through gear trains (not shown) enclosed by guards I4, and are disposed in side-by-side relationship in plan View with their respective axes oppositely inclined to a common horizontal plane indicated by the line A, A in Fig. l. I

A length of round bar I5 is presented to the rolls II and I2 longitudinally and is held up to the rolls by a longitudinal straight bearer I6, the distance apart of the rolls being such that the bar I5 always remainsbelowthe common plane A, A. The bearer I6 is carried by screws II which pass through tapped holes in a supporting strut I8, and by turning the screws I'I simultaneously the bearer I6 can be adjusted bodily to wards and away from the rolls to suit the diameter of the work, locking nuts I9 being provided for setting the position of the bearer after adjustment. The concave roll I2 is mounted in laterally slidable bearing blocks, one of which is seen at 20 in Fig. 2, and a mechanism (not shown) is provided for moving these blocks and with them the roll I2 towards or away from the non-adjustable convex roll II, this adjustment being made along with adjustment of the bearer It to suit the diameter of the work.

The bearer It may be of metal or hard wood and the bar I5 is so held by the bearer I6 that it bears against the middle part of the convex roll II and against the two ends of the concave roll I2 the operation of this reeling process being that the work is continuously rotated by the rolls and bent and rubbed by them and the bearer, being fed along the bearer due to the inclination of the roll axes and suffering a continuous bending strain, finally leaving the rolls straight and polished.

A second bearer 2I is provided and is located opposite the bearer I6, that is to say on the other side of the plane A, A, this second bearer 2| being adjustably mounted in like manner to the bearer I6 and carried by screws 22 which pass through tapped holes in a supporting strut 23, so that by turning the screws 22 simultaneously the bearer 2| can be adjusted towards and away from the rolls to suit the diameter of a second length of round bar 24 which is processed by the machine at the same time as the bar I5, but on the opposite side of the rolls and the plane A, A. Locking nuts 25 are provided for setting the position of the bearer 2| after adjustment thereof.

The two bars or tubes passing through the machine. at the same time may be of the same or of difl'erent diameters within reasonable 11m its by appropriate adjustment of the bearers l6 and 2|. A

It will be seen that the provision of first and second bearers in cooperation witl i the rolls; pro

vides two passes for the bars or tubes and thus doubles the length of work which can be proc* essed by the reeling machine per minute,

3. A reeling machine as set forth in claim 2 wherein both bearers are longitudinally straight. 4. In a reeling machine, the combination of a. pair of rolls oi concave and convex form.respecti'vely lomgi tudinal side by side relationship with their axes relatively inclined oppositely with respect to acommon plane, the

peripheries of said rolls being spaced apart throughout the lengths of the rolls, and a pair efspaced-apart work receiving passes respectively positioned on opposite sides of said common plane-,. each pass comprising three longitudinalv Ty extending. lines of contact for the work, two

Whilst in the reeling machine above described only the concave roll is adjustable, it will be un--' derstood that either or both rolls may beadjustable if desired.

Having fully described my ihventibn; what I' mon plane and spaced from said plane a sufficient distance to define with saidrolls, a secand pass spaced from said plane for receiving a second work piece.

2. A' reeling machine as set forth inclaim 1- wherein: both bearers extend throughout the lengths of said: rolls.

4 rolls,

orlsaidzlineslcomprising adjacent surfaces of said a first longitudinally extending bearer spaced from and positioned at one side of said common. plane and forming the third line of contact for the work positioned in one pass, and a second longitudinally extending bearer spaced from and positioned on the opposite side of said common plane and forming. the thirdvlin'e" ofeontact for the work positioned in theother: pass- RONALD HAMPTGNZ References Cited inthe file of this patent UNITED STATES PATENTS Number v Name Date 316,102 York Apr. 21,1885 2,099,497 O-fi'utt' Nov. 16,193? 2,336,133 Szabo Dec-7, 1943 FOREIGN PATENTS Number Country Date 27,728 Great Britain 1902' 

